While the exhaust manifold temperature is the most dramatic number it is by no means the only impressive number to consider. The turbo hot side number showed a drop of 181°C to 180°C from 361°C with the addition of the Lava Turbo Shield. The combined shielding also protected the cold side which, while unshielded, showed a drop of 39°C.
The gorgeous WeirTech divorced downpipe, possibly the only one in existance for the FWD SR20DET, works incredibly well but it certainly puts off a lot of heat. Fabricated completely with parts from Vibrant Performance, I really love this piece but also know that it adds a fair bit of heat to my engine bay. The 2017 temperatures were 245° C which puts it third on the list for hot spots in the engine bay. The HeatShield Products wrap brought this down by 72°C to 173°C.
The balance of the temperature drops was good but not nearly as dramatic as these first three. One anomaly is the oil cooler which has gone up – but this can be explained. For 2018 I have removed the motorcycle rad fan that was pushing air through the oil cooler. As a result, when sitting heat soak hits it harder and the oil temperatures at the cooler actually increase.
While recording the temperatures, I did so in the order listed. As a result, the oil cooler temps are checked after it has been sitting for a few minutes. While I removed the motorcycle fan, this was replaced by ducting that comes in from the driver’s side front corner. This is then vented through the hood (as previously) so is much more effective while the car is moving.
So much so that right off the track AES Auto’s owner/fabricator/tuner Paulo, who pushed me to ventilate the oil cooler in this manner, came up right after the first Knox Mountain run and put his hand right on the oil cooler. No issue and a braver man that I, who did not risk my lily white palms. So while the 104°C temperature is accurate in keeping with the standard I had set out last year, in fact the G-Spec Performance oil cooler is now performing much more effectively than in 2017 and previously.
There is no doubt in my mind that the combination of the HeatShield Products and the Koyorad resulted in significantly reducing the operating temperatures of the NX GTi-R. Of course, that was combined with several refinements that I detailed in the last article on the Koyorad to ensure that there was improved air flow to ensure that the cooling system was able to perform effectively. Another variable that I believe assisted in the car running cooler was the addition of the ECUMaster Classic.